I know mostly the shorter versions (except for Inna Gadda). Will have to pursue the extensions. Sometimes more is more.

Relatively recently, Mew released several versions of "Comforting Sounds." The longest is more of a jam (the extension starts around 4:23) and is accompanied with an animation from Jonas Bjerre (the video in my view is just utterly transcendent): https://youtu.be/4PvSbj22ZQY